public override CompilerResult VisitExpression([NotNull] LangParser.ExpressionContext context)
{
if (context.NAME() != null)
{
string name = context.NAME().GetText();
Parameter parameter = CurrContext().lookupParameter(name);
LLVMValueRef? @ref = null;
if (parameter != null)
{
@ref = parameter.Load();
}
else
{
LocalVariable lv = CurrContext().lookupLocalVar(name);
if (lv != null)
{
@ref = lv.Load(builder);
}
}
if ([email protected])
{
throw new Exception("Lookup failed " + name);
}
return(new Int32CompilerResult(@ref.Value));
}
if (context.NUMBER() != null)
{
return(new Int32CompilerResult(LLVM.ConstInt(LLVM.Int32Type(), UInt32.Parse(context.NUMBER().GetText()), true)));
}
if (context.ChildCount == 3)
{
Int32CompilerResult lhs = (Int32CompilerResult)VisitExpression(context.expression()[0]);
Int32CompilerResult rhs = (Int32CompilerResult)VisitExpression(context.expression()[1]);
if (context.MULTIPLY() != null)
{
return(new Int32CompilerResult(LLVM.BuildMul(builder, lhs.reference, rhs.reference, "multmp")));
}
if (context.DIVIDE() != null)
{
return(new Int32CompilerResult(LLVM.BuildSDiv(builder, lhs.reference, rhs.reference, "divtmp")));
}
if (context.MODULO() != null)
{
return(new Int32CompilerResult(LLVM.BuildSRem(builder, lhs.reference, rhs.reference, "remtmp")));
}
if (context.ADD() != null)
{
return(new Int32CompilerResult(LLVM.BuildAdd(builder, lhs.reference, rhs.reference, "addtmp")));
}
if (context.SUBSTRACT() != null)
{
return(new Int32CompilerResult(LLVM.BuildSub(builder, lhs.reference, rhs.reference, "subtmp")));
}
}
return(base.VisitExpression(context));
}
public LLVMValueRef Assign(LLVMBuilderRef builder, Int32CompilerResult compilerResult)
{
LLVM.BuildStore(builder, compilerResult.reference, @ref);
return(Load(builder));
}
